A woman has accused Roy Moore, the Republican nominee for the U.S. Senate in Alabama, of initiating a sexual encounter with her when she was 14 years old and he was 32, the Washington Post reported on Thursday.

Moore, 70, the state's former chief judge, vehemently denied the allegations, calling them "completely false and a desperate political attack."

14PHOTOS

Lawmakers react to Roy Moore sexual misconduct allegations

See Gallery

Lawmakers react to Roy Moore sexual misconduct allegations

Alabama Senate candidate Roy Moore is accused of initiating a sexual encounter with a 14-year-old girl when he was 32, according to a Washington Post report.

(Photo by Scott Olson/Getty Images)

The allegations against Roy Moore are deeply disturbing and disqualifying. He should immediately step aside and all… https://t.co/MXrceCZZ9a

If there is any truth at all to these horrific allegations, Roy Moore should immediately step aside as a Senate candidate.

JUST NOW: @lisamurkowski on WaPo Report on Roy Moore: “I’m horrified and if it’s true he should step down immediately.”

If there is any shred of truth to the allegations against Roy Moore, he should step aside immediately.

Look, I'm sorry, but even before these reports surfaced, Roy Moore's nomination was a bridge too far.

The allegations leveled at Roy Moore are disturbing. I have serious concerns about his prior conduct and fitness fo… https://t.co/EQcUEpHRKH

Beverly Nelson (L) shows a school year book with attorney Gloria Allread during a news conference announcing new allegations of sexual misconduct against Alabama Republican congressional candidate Roy Moore, in New York, November 13, 2017. REUTERS/Lucas Jackson

Gloria Deason

Wendy Miller

Gloria Deason

Wendy Miller

Gloria Deason

Accuser Beverly Young Nelson, reacts while reading a statement claiming that Alabama senate candidate Roy Moore sexually harassed her when she was 16, in New York, U.S., November 13, 2017. REUTERS/Lucas Jackson

Attorney Gloria Allred stands with accuser Beverly Young Nelson, holding a sketch of herself made when she was 16 after reading a statement claiming that Alabama senate candidate Roy Moore sexually harassed her when she was 16, in New York, U.S., November 13, 2017. REUTERS/Lucas Jackson

Beverly Nelson (L) reacts as she reads a statement to reporters with attorney Gloria Allred during a news conference announcing new allegations of sexual misconduct against Alabama Republican congressional candidate Roy Moore, in New York, November 13, 2017. REUTERS/Lucas Jackson

NEW YORK, NY - NOVEMBER 13: Beverly Young Nelson (L) speaks to the media with her lawyer Gloria Allred, at a news conference where she has accused Alabama Republican Senate candidate Roy Moore of sexually abusing her when she was 16 on November 13, 2017 in New York City. Moore, a controversial politician who recently won a run-off against Luther Strange for Alabama's Senate seat, is currently fighting accusations alleging that he pursued sexual relationships with teenagers -- including a 14-year-old -- when he was in his 30s. (Photo by Spencer Platt/Getty Images)